There was hope that Diego Castillo could carve out a potential infielder/utility role with the Pirates last season. However, the bat never came around, and aside from middle infield, Castillo was a poor defender. Castillo hit .206/.251/.382, posted a .282 wOBA, and 71 wRC+. Although Castillo hit for a respectable amount of power, hitting 11 home runs and having a .176 ISO, it was the only good thing he brought to the table. He struck out 26.5% of the time with an unplayable 4.9% rate.
The Pirates then traded Castillo to the Arizona Diamondbacks this past winter. Castillo has appeared in just one contest with a single plate appearance to his name in 2023. He’s spent nearly all of the campaign at Triple-A, where he is currently hitting .322/.423/.421. He currently has a higher walk rate (15.1%) than strikeout rate (14.2%), though he’s hit for very little power (.098 ISO). Overall, he has a 115 wRC+.